Intel Chestrig (#5272)

# About the pull request

Adds intel chestrig, pretty same as intel backpack but with a different
sprite.

# Explain why it's good for the game
Sprites.


# Testing Photographs and Procedure
<details>
<summary>Screenshots & Videos</summary>

Put screenshots and videos here with an empty line between the
screenshots and the `<details>` tags.
![image
(8)](https://github.com/cmss13-devs/cmss13/assets/115417687/6003a683-160d-4b1a-90d9-83cb5be04cd9)
![image
(7)](https://github.com/cmss13-devs/cmss13/assets/115417687/a2d9faa2-a87a-47b8-92c8-3e0ab10d163b)
![image
(6)](https://github.com/cmss13-devs/cmss13/assets/115417687/f3dcdd2b-02d1-4b89-8b1f-f106537d7dd7)
![image
(5)](https://github.com/cmss13-devs/cmss13/assets/115417687/9e7faa1e-64d6-4b2f-8466-2c20b1ca1d8b)
![image
(4)](https://github.com/cmss13-devs/cmss13/assets/115417687/3c3152a0-ea88-4336-8164-8b43dfdd7ffa)
![image
(3)](https://github.com/cmss13-devs/cmss13/assets/115417687/020dac6a-af23-4a2a-b64e-bc3ea74a308e)
![image
(2)](https://github.com/cmss13-devs/cmss13/assets/115417687/f5737199-916c-40ac-9809-9efe48921002)
![image
(1)](https://github.com/cmss13-devs/cmss13/assets/115417687/a4676665-65d2-4785-8fad-f8cadbee7bfb)

![image](https://github.com/cmss13-devs/cmss13/assets/115417687/02661a77-38da-4b97-ba3c-f62e0a04f7da)

</details>


# Changelog
:cl: poltava, ihatethisengine
add: added intel chestrig
imageadd: added sprites for intel chestrig
/:cl:

code/game/machinery/vending/vendor_types/intelligence_officer.dm

@@ -72,6 +72,7 @@ GLOBAL_LIST_INIT(cm_vending_clothing_intelligence_officer, list(
 
 		list("BACKPACK (CHOOSE 1)", 0, null, null, null),
 		list("Expedition Pack", 0, /obj/item/storage/backpack/marine/satchel/intel, MARINE_CAN_BUY_BACKPACK, VENDOR_ITEM_RECOMMENDED),
+		list("Expedition Chestrig", 0, /obj/item/storage/backpack/marine/satchel/intel/chestrig, MARINE_CAN_BUY_BACKPACK, VENDOR_ITEM_RECOMMENDED),
 		list("Radio Telephone Pack", 0, /obj/item/storage/backpack/marine/satchel/rto/io, MARINE_CAN_BUY_BACKPACK, VENDOR_ITEM_REGULAR),
 
 		list("HELMET (CHOOSE 1)", 0, null, null, null),

code/game/objects/items/storage/backpack.dm

@@ -461,6 +461,12 @@
 	icon_state = "marinebigsatch"
 	max_storage_space = 20
 
+/obj/item/storage/backpack/marine/satchel/intel/chestrig
+	name = "\improper USCM expedition chestrig"
+	desc = "A heavy-duty IMP based chestrig, can quickly be accessed with only one hand. Usually issued to USCM intelligence officers."
+	icon_state = "intel_chestrig"
+	max_storage_space = 20
+
 /obj/item/storage/backpack/marine/satchel
 	name = "\improper USCM satchel"
 	desc = "A heavy-duty satchel carried by some USCM soldiers and support personnel."